People put so much emphasis on rings, and completely lose sight of everything else. Was Dan Marino not a good QB? He doesn't have any rings. They're nice, but not at all a measure of how good a QB/Team is.
Think about it like this: The Patriots have a chance to win the Super Bowl every year. Nobody even knows if we are going to make the playoffs sometimes.
At the start of the season, pretty much every team has a shot at the Lombardi. I bet you Pats fans would trade a few of their post season appearances for an actual SB to show for it. Heck I guarantee you Eagles fans would. Reid always had them in.